Ocean High Frequency Dynamics de-aliasing and related Geodetics
Our objective is to focus on reducing the geographical heterogeneity of the error budget and investigating on more subtle, but significant, terms such as tidal and atmospheric loading in coastal regions, non-linear tides in deep oceans and internal tide surface signal. Main modelling efforts will be put on unstructured mesh resolution, with a (close to) 1 km target in coastal regions, bathymetry improvements and improved loading and self-attraction, as well for tidal and storm surges simulations. Improved wind stress parameterization (including ocean waves derived wind stress) will be evaluated. Massive data assimilation for tidal atlases will also be investigated.
In addition, the project will investigate the ocean mass distribution related effects on the solid Earth. Actually, tackling residual errors in the altimetry observation and correction system now requires considering the coupling of the various physics and monitoring systems, or, in other words, considering the errors correlations in error budget of the satellite altimetry observing systems.